1378632210 has 128 divisors (see below), whose sum is σ = 3611520000. Its totient is φ = 335612160.

The previous prime is 1378632193. The next prime is 1378632223. The reversal of 1378632210 is 122368731.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2762541 + ... + 2763039.

It is an arithmetic number, because the mean of its divisors is an integer number (28215000).

Almost surely, 2^1378632210 is an apocalyptic number.

1378632210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1378632210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1805760000).

1378632210 is an abundant number, since it is smaller than the sum of its proper divisors (2232887790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1378632210 is a wasteful number, since it uses less digits than its factorization.

1378632210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 1378632210 is about 37129.9368434690. The cubic root of 1378632210 is about 1112.9683313707.

The spelling of 1378632210 in words is "one billion, three hundred seventy-eight million, six hundred thirty-two thousand, two hundred ten".